Timing a 1987 LB9 Iroc
#1
Member
Thread Starter
Join Date: Jul 2011
Location: Los Angeles
Posts: 178
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1987 IROC-Z Camaro
Engine: 305 LB9
Transmission: 700r4
Timing a 1987 LB9 Iroc
Not sure where the timing should be here's where it is currently. Doesn't seem right. All the stickers in my engine bay are gone (the car was stored by the PO outside for a decade), so that info is gone. If anyone could tell me the factory prescribed timing, that would be great. The car is an 87 iroc, 305 lb9, 700r4. Thanks for reading!
#2
Supreme Member
iTrader: (-3)
Join Date: Dec 2012
Posts: 1,184
Likes: 0
Received 1 Like
on
1 Post
Car: 1991 firebird
Engine: TBI 305 (built)
Transmission: T5
Axle/Gears: 4.10
It needs to go up to atleast the big V (0*) if not one or two little v's past the big one in the opposite direction right now ur at 2* retarded
Wait I think ur at 6* retarded .. Not good ... U need to unplug the est wire then crank the car then set timing then turn car off then plug est wire back up
Wait I think ur at 6* retarded .. Not good ... U need to unplug the est wire then crank the car then set timing then turn car off then plug est wire back up
#4
Member
Thread Starter
Join Date: Jul 2011
Location: Los Angeles
Posts: 178
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1987 IROC-Z Camaro
Engine: 305 LB9
Transmission: 700r4
Re: Timing a 1987 LB9 Iroc
jesus, no wonder the exhaust has been smelling so bad. I've been working on this thing for like a year just assuming that the timing was still factory since I'm the 2nd owner and the PO didnt know anything about working on cars... That would explain a lot! Hope I didnt damage anything by running so many times with wacky timing. Thanks for the speedy responses!
#5
Supreme Member
Join Date: Jan 2003
Location: Houston, Texas
Posts: 2,133
Likes: 0
Received 2 Likes
on
2 Posts
Car: 88' IROCZ
Engine: 388 TPI Motown 350 Race block
Transmission: 700R4
Axle/Gears: 2.77
Re: Timing a 1987 LB9 Iroc
The ECM take control of engine timing after the engine rpm is higher than 600rpm.
For this reason a "Set Timing Connector" must be disconnected to disable the ECM control and allow setting the static baseline timing. The engine must be at normal operating temperature.
Don't forget to reconnect the connector after you're done.
For this reason a "Set Timing Connector" must be disconnected to disable the ECM control and allow setting the static baseline timing. The engine must be at normal operating temperature.
Don't forget to reconnect the connector after you're done.
#7
Supreme Member
Join Date: Jun 2011
Location: knoxville tn
Posts: 2,036
Likes: 0
Received 5 Likes
on
5 Posts
Car: 86 IROC
Engine: 5.0 TPI
Transmission: 700-R-4
Axle/Gears: 2.73 open
Re: Timing a 1987 LB9 Iroc
Not sure where the timing should be here's where it is currently. Doesn't seem right. All the stickers in my engine bay are gone (the car was stored by the PO outside for a decade), so that info is gone. If anyone could tell me the factory prescribed timing, that would be great. The car is an 87 iroc, 305 lb9, 700r4. Thanks for reading!
Trending Topics
#8
Supreme Member
#9
Member
iTrader: (2)
Join Date: Sep 2007
Posts: 128
Likes: 0
Received 0 Likes
on
0 Posts
Car: Today? 98 GMC Sonoma
Engine: Seriously? The Sonoma has a TPI 305
Transmission: T56
Axle/Gears: 7.625/4.10
Re: Timing a 1987 LB9 Iroc
The motor in question is in my Sonoma. The emisions label on it says something like 2.2L??
I set it at 6 and seems to work.
Thread
Thread Starter
Forum
Replies
Last Post
mustangman65_79
Body
3
08-11-2015 03:17 PM